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Q:

Which pair of atoms has the highest electronegativity difference?

 

(Calcium's electronegativity is 1.0

Fluorine's electronegativity is 4.0

Hydrogen's electronegativity is 2.2

Sodium's electronegativity is 0.93)

A) F-F B) Ca-F
C) H-F D) Na-F

Answer:   D) Na-F



Explanation:

F-F = 4 - 4 = 0

Ca-F = 4 - 1 = 3.0

H-F = 4 - 2.2 = 1.8

Na-F = 4 - 0.93 = 3.07

 

Hence, the highest electronegativity difference is in Na-F.

Subject: Chemistry
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